RFR: 8305690: [X86] Do not emit two REX prefixes in Assembler::prefix

Mon Apr 17 19:33:08 UTC 2023

On Thu, 6 Apr 2023 05:36:06 GMT, Guoxiong Li <gli at openjdk.org> wrote:

> Hi all,
> 
> This patch prevents `Assembler::prefix` from emitting two `REX prefixes`. The current code in mainline works well because the corresponding code path is not triggered.
> 
> Thanks for the review.
> 
> Best Regards,
> -- Guoxiong

Looks good.

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Marked as reviewed by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/13369#pullrequestreview-1388823706